Could not load file or assembly 'Devart.Data.Oracle.Entity.EF5'

Could not load file or assembly 'Devart.Data.Oracle.Entity.EF5'

Hi,
we moved from devart 8.4 to version 10.0 so current entity dll is devart.data.oracle.enity.EF6 but after running program on a new user environment we're getting below error although we never had or used such dll devart.data.oracle.enity.EF5 - no idea from where that error originated? 

"ExceptionMessage": "Schema specified is not valid. Errors: \r\nEntityModel.EDBAliasModel.ssdl(2,85) : error 0004: Could not load file or assembly 'Devart.Data.Oracle.Entity.EF5, Version=10.0.0.0, Culture=neutral, PublicKeyToken=09af7300eec23701' or one of its dependencies. The system cannot find the file specified.

thanks